118863181 has 2 divisors, whose sum is σ = 118863182. Its totient is φ = 118863180.

The previous prime is 118863161. The next prime is 118863187. The reversal of 118863181 is 181368811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105247081 + 13616100 = 10259^2 + 3690^2 .

It is a cyclic number.

It is not a de Polignac number, because 118863181 - 2⁹ = 118862669 is a prime.

It is a super-2 number, since 2×118863181² = 28256911594877522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 118863181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118863187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59431590 + 59431591.

It is an arithmetic number, because the mean of its divisors is an integer number (59431591).

Almost surely, 2^118863181 is an apocalyptic number.

It is an amenable number.

118863181 is a deficient number, since it is larger than the sum of its proper divisors (1).

118863181 is an equidigital number, since it uses as much as digits as its factorization.

118863181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 37.

The square root of 118863181 is about 10902.4392224859. The cubic root of 118863181 is about 491.6798942849.

The spelling of 118863181 in words is "one hundred eighteen million, eight hundred sixty-three thousand, one hundred eighty-one".